HP Z440 Workstation HP Z440 Workstation As luck would have it, we've had a trio of Premium 1S machines come through our doors recently, one from each of three workstation vendors: Maingear's Quantum F131 , Dell's Precision 5810 , and HP's Z440, reviewed here.System FeaturesBack in 2009, HP laun... Excellent balance of price and performance, PCI Express–based Z Turbo SSD PSU cannot be swapped out easily HP isn't the top-selling workstation vendor on the planet for nothing. Its chief competitors, Dell and Lenovo, have both raised the competitive pressure, but HP is holding its ground with solid, sensible, and innovative products, including the Z440. Along...